Horizontal metal extrusion press



Feb. 2, 1960 P. BILLEN 2,923,407

HORIZONTAL METAL EXTRUSION PRESS Filed April 16, 1956 2 Sheets-Sheet 1Feb. 2, 1960 P. BILLEN 2,923,407

HORIZONTAL METAL EXTRUSION PRESS Filfid April 16, 1956 2 Sheets-Sheet 2i M i=5 Ila I I I I4 I m/ 164 mm flu" 115 L ama 2,923,401 HORIZONTALMETAL EXTRUSION PRESS Peter Billen, Leverkusen-Kuppersteg', Germany,tissigiror In horizontal metal tube and rod extrusion presses in whichthe container or receiving cylinder supports rest on hearing plates thelatter are located at the foot of the press, for instance, at about thesame level as the lower tie rods or tension columns. Especially in steeltube presses it is a disadvantage that the low position of the bearingplates exposes them to fouling by scale and so forth. Moreover, when thereceiving cylinder is open they impede accessibility. The provision ofprotecting caps would create additional obstructions withoutsatisfactorily fulfilling their intended purpose of preventing thebearing plates from being fouled.

It is the object of the present invention to overcome the statedinconvenience. The invention consists in that the bearing plates arelocated above the main central axis of the press (that is to say, thecommon axis of the pressure cylinder, the receiving cylinder and thedie), for instance at the level of the upper columns. The bearingsurfaces may be disposed in planes passing through the said axis of themachine in a manner known in itself to enable the receiving cylinder tobe aligned with the same accuracy as heretofore.

It is preferred to arrange the bearing plates on supporting beams withtheir ends supported on the one hand on the pressure cylinder and on theother on the bolster frame. The supporting beams may be hollow to permitthe columns to be disposed within the beams. In such a form ofconstruction the ends of the supporting beams may be supported directlyon the tie rods or columns instead of being secured to the pressurecylinder and the bolster frame. In view of the length of the supportingbeams and the great weight of the receiving cylinder the supportingbeams might tend to twist because the actual bearing surfaces for thereceiving cylinder are canted. To prevent the beams from twisting thetwo supporting beams are braced, preferably by means of one or moretransverse interconnecting supporting members, preferably disposedbetween the centers of the beams.

An illustrative form of construction of the present invention, adaptedto a horizontal press intended primarily for extruding steel, is shownin the accompanying drawings in which:

Figure 1 is a vertical section along I-I in Figure 2, and

Figure 2 is a section along II-ll in Figure 1, shown on a larger scale.

1, 2, 3 and 4 are the tension columns or tie rods of the press whichconnect the pressure cylinder 20 and the bolster 21. The cylinder 20contains a pressure piston 22 with a ram 23 attached thereto and ismovable in the conventional manner hydraulically or by means of steam.

For extruding a steel ingot the ram can be forced into the orifice 6 ofa container or receiving cylinder 7 and can squeeze the material througha die 26 carried by a die holder 24 held by the bolster 21. The columns3 and 4 are below the working platform 5. The level of this platform isindicated in Figure 1 at the extreme, righthand and left-hand sides, theintermediate part being- Patented l' 'eb. 2, 1960 2 omitted for the sakeof clearnes's. The receiving cylinder 7 is suspended in a holder 8 witha pedestal 9 the lower extremity 10 of which runs in a slideway 11formedby two U guide rails 12. 13 are the two draw bars for moving thereceiving cylinder longitudinally. The upper exterision of the holder 8for the receiving cylinder rests on bearings 14, the outersemi-cylindrical surfaces 14a of which permit a rotary movement in theholder 8 in a manner known per se. The bearings 14 are supported onheating plates 15 resting on supporting beams 16 which are mounted withone end against the pressure cylinder 20 and with the other end againstthe bolster 21. The supporting beams 16 are longitudinally bored, eachbeam enclosing one of the columns 1 and 2, and their lower portions 16aembrace the shoulders (Figure 2) of the holder 8 of the receivingcylinder. The portions 16a are secured to thepressure cylinder by meansof screws 27. They are afiixed to the bolster 21 in a similar manner butthis is not shown in the drawing. The sliding surfaces of the bearings14 and of the bearing plates 15 lie in axial planes of the machine, asindicated by the dotted lines 17. The bearing plates 15 or the bearings14 may be adjustable in a manner known per se but not specially shown inthe drawings to permit the holder of the receiving cylinder to becentered in the press. The two beams 16 are connected together bytransverse mem-' bers 18 inserted from above between the beams 16, so asto bear against the beams along the surfaces 18a. The insertion of thesetransverse interconnecting supporting members 18 prevents the beams frombeing twisted under the load of the receiving cylinder. Dust protectors19 are likewise provided and these may also serve to carry away coolingwater sprayed onto the bearing plates 15 for instance from perforatedpipes 25 v(Figure 2).

The form of construction that has been described removes allobstructions from the working platform 5, as all the supporting members16 and 18 for the receiving cylinder are at a height that permits a manto stand up right underneath them. Accessibility of the press and moreparticularly of the tools has therefore been considerably improved bycomparison with the known conventional types of press. Moreover, thebearing plates 15' are better protected from dirt and injury becausethey are and the bolster. Moreover, the beams might be omitted and thebearing plates 15 directly mounted on the columns, but adjustment wouldthen be rather diflicult.

What is claimed is:

1. A horizontal press for the extrusion of metal, comprising: a pressurecylinder, a pressure piston reciprocable in the pressure cylinder, a ramsecured to the pressure piston, a bolster, a die-holder held by thebolster, a die carried by the die-holder, the die being co-axial withthe ram, tie rods connecting the pressure cylinder with the bolsterabove and below the axis of the die and the ram and including two tierods above said axis, two bearing plates carried by the two upper tierods, a billet container co-axial with the die and the ram, said billetcontainer having supporting faces overlying the bearing plates, saidfaces bearing upon and supported by said bearing plates, said bearingplates and said supporting faces providing the sole means for supportingthe weight of said billet the die.

2. A horizontal press forthe extrusion of metal, com, J

prising: a pressure cylinder, a pressure piston reciprocable pressurecylinder, two of the tie-rods being located above thezaxis of the ram, adie-holder held bythe .bdlstetg a the ram, hollow supporting beamsenclosing the two upper tierods located above the axis of the ram and offue die and-bearing at one end against the pressure cylinder and at "theother end against the bolster, two planebearl said bearing plates, saidbearing plates and 'die carried by the die-holder, the die beingco-axial with 7 in-the pressure cylinder, a ram secured to the pressuresaid supporting .faces providing the sole means for suppiston, 21bolster, tie-rods connecting the bolster with the" porting the weight ofsaid container.

References Cited in the fileof this patent UNITED STATES PATENTS 896,684Benjamin Aug. 18, 1908 1,574;792 Clark Mar. 2, 1926 1,944,982 Hoy Jan.30, 1934 2,075,803 Dinzlet a1. j Apr. 6,1937 2,778,495 Kraizse Janq22,1957 FOREIGN PATENTS 1,059,568

